Toshiba TOSVERT VF-AS3, Instruction Manual

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E6582062 
6. [Advanced] How to use parameters
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Occurrences of trips may be avoided using the appropriate function in consideration of the causes of
alarms or trips.
6. 15. 1 Restarting smoothly after momentary power failure
(restarting from motor coasting state)
<F301: Auto-restart>
For detailed settings of auto-restart, refer to [5. 4. 2].
6. 15. 2 Selecting operation for momentary power failure
<F302: Regenerative power ride-through>
<F310: Dec time at power failure>
<F313: Ridethrough time>
<F317: Synchronized stop time>
<F318: Synchronized reach time>
<F625: Undervoltage detection level>
<F629: Regenerative power ride-through level>
■ Function
Select the reaction to a momentary power failure during operation from regenerative power ride-
through, deceleration stop at power failure and synchronized Acc/Dec.
• Regenerative power ride-through: When a momentary power failure occurs, the operation is
continued using the regenerative energy of the motor.
• Deceleration stop at power failure: When a momentary power failure occurs, the operation is
stopped forcibly and swiftly using the regenerative energy of the motor. The deceleration time
varies by the control. "StOP" is displayed on the operation panel during the stop. After the
deceleration stop at power failure, the stop state is kept until the run command is turned OFF.
• Synchronized Acc/Dec: For a spindle winder of textile machine or the like, multiple machines are
stopped in a lined-up manner or brought to reach the frequency command simultaneously during
momentary power failure or restoration of power to prevent thread breakage.
■ Parameter setting
6. 15 Avoiding trips
Title Parameter name Adjustment range Unit Default setting
F302 Regenerative power ride-
through 0: Disabled
1: Regenerative power ride-through
2: Deceleration stop at power failure
3: Synchronized Acc/Dec (TB)
4: Synchronized Acc/Dec (TB + power
failure)
0
F310 Dec time at power failure 0.0 - 320.0 s 2.0
0: Disabled
1: Regen power ride-through
2: Dec stop at power failure
3: Synchronized Acc/Dec(TB)
4: Synch Acc/Dec TB+power failure
0.0Hz STOP
13:15
F302 : Regen power ride-through